Wellblock Fan 116 is located in northern Boxing subsag of Dongying Sag,Jiyang Depression.The structural feature of sandbody in the second sand group of the middle part of the third member of Shahejie Formation is a graben structure held by two nearly east-west faults.In the middle of the wellblock is a platform;the strata gradually decrease from east to west and elevate from Wellblock Fan 116 is located in northern Boxing subsag of Dongying Sag, Jiyang Depression. Structural features of sandbody in the second sand group of the middle part of the third member of Shahejie Formation is a graben structure held by two nearly east-west faults. In the middle of the wellblock is a platform; the strata gradually decrease from east to west and elevate from